Joseph Mamrout
(Joe Mamrout)
Chief Operating Officer
Sentry Realty
(American Exchange Group)
Owner
1400 Broadway 18th floor New York, NY 10018
Sentry Realty NYC portfolio
$823.3 million -office 54%, elevator 45%; Manhattan 100%*
282th largest portfolio by dollar value
1,439,352 sqft – office 66%, elevator 33%; Manhattan 100%
344th largest by SF
5 properties – Manhattan 100%
1828th largest
573 residential units – Manhattan 100%
540th largest by residential units
1 foreclosure, 0 bankruptcies, 0 other court cases.
Person Activity past 24 months:
Buyer signatory: 3 for $365.7 million
Borrower signatory: 7 for $804.7 million
Developer (new building or major alteration): 3 for 46,756 square feet
Top Ten Associated Companies:
Sail Harbor Capital (2), Fortress Investment Group (2), Deutsche Bank (2), Baupost Group (1), Savanna (1), Invesco (1), Vanbarton Group (1), Bain Capital (1)
Top Ten Associated People:
Andrew Mullin (1), Thomas C. Vasile (1), Nicholas Bienstock (1), Jaime Kelley (1), Damiano Buffa (1), Brandon Atkins (1), Darrell L. Gustafson (1), Michael Boyle (1)
Recent activity as signatory:
• Sentry Realty borrowed $165 million from Bain Capital for 1383 Broadway on January 23, 2026.
• Sentry Realty borrowed $280 million from Deutsche Bank for 138 John Street on July 29, 2025.
• Sentry Realty and 60 Guilders borrowed $72 million from Fortress Investment Group for 1370 Broadway on January 16, 2025.
• Sentry Realty and 60 Guilders borrowed $45.5 million from Fortress Investment Group for 1370 Broadway on January 16, 2025.
• Invesco sold 1370 Broadway for $75.2 million to Sentry Realty and 60 Guilders on January 16, 2025.
• Sentry Realty and 60 Guilders borrowed $165 million from Sail Harbor Capital and Baupost Group for 1383 Broadway on December 19, 2024.
• Savanna sold 1383 Broadway for $200 million to Sentry Realty and 60 Guilders on December 19, 2024.
• Sentry Realty borrowed $0 from Sail Harbor Capital for 1383 Broadway on December 17, 2024.
• Sentry Realty and 60 Guilders borrowed $77.2 million from Deutsche Bank for 28 East 41 Street on October 30, 2024.
• Vanbarton Group sold 28 East 41 Street for $90.5 million to Sentry Realty and 60 Guilders on October 30, 2024.
Latest Stories:
• $265M pre-foreclosure filed at Metro Loft’s FiDi rental (April 03, 2025)
• Sentry Realty, 60 Guilders pay $75.2M to Invesco for office in Garment District (January 23, 2025)
• Alen Mamrout, 60 Guilders, acquire 1375 Broadway in $200M deal (January 01, 2025)
• Sentry Realty refis debt on 1375 Broadway, after buying $200M note in August (December 27, 2024)
• Savanna pays $435M to Westbrook Partners for property in Garment District (July 17, 2020)